Summary "method and system of operation of self-propelled harvester" the present invention to the technological field of agricultural equipment in general. Problem to be solved: During harvesting, a sugarcane harvester may be clouded due to unexpected amounts of sugarcane, debris, or other elements, which forces the operator to stop the machine and clean it. which wastes hours of work and therefore compromises productivity. Although the state of the art comprises methods of operating self-propelled harvesters which, in one way or another, are intended to prevent or mitigate shrouding or to keep the harvester functioning at all times, it is clear to note that such methods provide for means of control only in function of parameters directly or indirectly measured through the components that integrate them. This limitation is extremely negative, after all, such measurement is performed at only one point of the harvester, which can result in “false positive” or “false negative” diagnoses. Solving the problem: The invention aims to provide a method and system of operation of a harvester that provides an improved solution to avoid plugging. To this end, it is proposed to simultaneously measure at least one parameter of the base cutting set, at least one parameter of the mincing set and the positioning of at least one floating roller of the conveyor system. By comparing measured parameters and reference values over a pre-defined time interval, it is possible to perform self-propelled combine propel speed management and rotational speed management of the two cutting assembly cut-off wheels. base and the billet cutting blades of the mincer assembly as a function of the result of the comparisons performed in the step.resumo “método e sistema de operação de colheitadeira automotriz” a presente invenção ao campo tecnológico de equipamentos agrícola em geral. problema a ser resolvido: durante a colheita, uma colheitadeira de cana-de-açúcar pode sofrer embuchamento devido à quant